Article Outline

1.  Quick answer and the seven required inputs
2.  Load weight load center and residual capacity
3.  Lift height mast clearance and free lift
4.  Aisle pallet and rack geometry
5.  Duty cycle battery operator and environment
6.  Supplier validation and acceptance test
7.  Frequently asked questions

Quick Answer

To choose a reach truck, document seven inputs before comparing models: maximum load weight, true load center, required fork height, clear rack-to-rack aisle width, pallet and rack geometry, duty cycle, and operating environment. Then request a residual-capacity chart and Ast value for the exact mast, forks, battery and attachment package. The safest purchase is not the truck with the highest headline capacity; it is the configuration that handles the heaviest assigned pallet at the highest assigned beam, clears every doorway and overhead obstruction, completes the shift on the planned charging schedule, and gives trained operators enough working clearance for repeatable pallet placement.

Key Takeaways

• Rated capacity is a starting point; residual capacity at height is the decisive value.
• Load center must reflect the real pallet and load distribution rather than a convenient catalog number.
• Ast and turning radius describe different constraints and should not be substituted for each other.
• Battery capacity should be sized from duty cycle and charging opportunity, not shift duration alone.
• The purchase specification should include a witnessed site test and written acceptance criteria.

Buyer Summary

A disciplined answer to how to choose a reach truck begins with measurements, not model names. ISO 3691-1 covers reach trucks with retractable masts or fork-arm carriages within the broader safety framework for self-propelled industrial trucks, while OSHA requires workplace training to address narrow aisles, pedestrian traffic, ramps and other site-specific hazards. These sources support the same procurement principle: the truck, operator and workplace form one operating system. A specification that ignores any one of the three can create a capacity, clearance or productivity problem after delivery.

The Seven Specifications at a Glance

Đặc điểm kỹ thuật	Minimum buyer data	Supplier output
1 Load weight	Heaviest pallet and normal range	Rated and residual capacity confirmation
2 Load center	Load depth and center-of-gravity position	Capacity chart at actual load center
3 Lift height	Top beam and required fork height	Mast selection and capacity at height
4 Aisle width	Clear rack-to-rack width and end space	Ast for actual pallet orientation
5 Pallet and rack	Entry direction underside overhang beam geometry	Fork baseleg and reach compatibility
6 Duty cycle	Pallet moves travel lift cycles shifts breaks	Battery charger and thermal plan
7 Environment	Floor temperature moisture dust slopes traffic	Wheels options derating and safety controls

Specification One Load Weight

Maximum load weight must include the pallet, packaging, product and any recurring off-center condition. Average load weight is useful for energy modeling but cannot define safe capacity. Buyers should assign the heaviest verified pallet to its highest intended rack level and provide that matrix to the supplier.

Residual capacity must be confirmed for the delivered configuration. Mast height, reach extension, side shift, longer forks and attachments can reduce the capacity available at height. OSHA requires users to keep capacity plates legible and obtain manufacturer approval for modifications that affect capacity or safe operation under 29 CFR 1910.178.

Specification Two Load Center

Load center is the horizontal distance from the fork face to the load center of gravity under the defined test condition. A 1,200 mm-deep uniformly distributed pallet is often associated with a 600 mm load center, but irregular, liquid, long or front-heavy loads can move the center outward. The greater moment can reduce allowable load even when gross weight stays the same.

The buyer should provide load depth and distribution instead of asking only for a 1.5 or 2.5 tonne truck. The CQD15B and CQD20B are published at a 500 mm load center, whereas the CQD25A seated reach truck is published at 600 mm. Those ratings cannot be compared fairly without considering load geometry and height.

Specification Three Lift Height and Mast Clearance

Required fork height should be measured to the highest pallet entry point with a placement allowance, not merely to the top beam. The buyer must also record lowered mast height, overhead-guard height, free lift and maximum extended height. OSHA lists overall lowered height, overall raised height, free fork height and maximum fork height as critical measurements in its forklift measurement guidance.

Free lift matters when loads must rise inside a trailer, doorway or low ceiling before the mast extends. A triplex full-free-lift mast may solve the clearance problem, but it can change service weight, visibility, aisle requirement and residual capacity. Request a dimensioned mast table and load chart for every optional lift height under consideration.

Specification Four Aisle Width

Clear rack-to-rack aisle width must be measured at the narrowest operating point. Include rack protectors, column offsets, pallet overhang and any floor marking or pedestrian separation that reduces usable space. A truck that fits a nominal design aisle can still clip a protector when pallets project into the travel envelope.

Ast is the relevant catalog value for right-angle stacking under a defined pallet size and orientation. Turning radius describes the path of the truck body and cannot by itself prove pallet-stacking clearance. Product examples show the difference: source data list MF20 Ast values around 2,746 to 2,796 mm depending on mast and pallet, while higher-capacity MF30 examples approach roughly 3,000 to 3,066 mm.

Specification Five Pallet and Rack Geometry

Pallet compatibility determines whether the baselegs and forks can enter without interference. Record pallet length, width, underside openings, bottom-board arrangement, load overhang and entry direction. Closed-bottom or unusual pallets may favor a counterbalance truck or require a different reach arrangement.

Rack geometry determines the necessary reach stroke and placement tolerance. Record upright depth, beam width, flue space, back-to-back spacing, lowest beam clearance and whether loads are stored single or double deep. The broader SINOLIFT electric reach truck category can be filtered conceptually into stand-on, seated, moving-mast and pantograph solutions only after these dimensions are known.

Specification Six Duty Cycle and Battery Strategy

Duty cycle should quantify work rather than use labels such as light or heavy. Estimate pallets per hour, average travel distance, average lift height, reach cycles, gradients, shift length, breaks and peak periods. High lift and long travel consume energy differently, so two eight-hour shifts can need different battery capacities.

Battery selection must include voltage, ampere-hour capacity, charger power, charge window, battery handling and room conditions. Side-pull lead-acid systems may support planned battery exchange, while lithium systems may support opportunity charging when the charger and battery management system are matched. The SINOLIFT product overview provides adjacent electric equipment categories for a fleet-level energy plan.

Specification Seven Operating Environment and Operator Workflow

Floor condition affects stability, traction, vibration and component life. Survey cracks, joints, slopes, ramps, wet zones, dock plates and floor flatness at high-rack locations. Compact polyurethane wheels work best on smooth surfaces, and low ground clearance leaves limited tolerance for debris or transitions.

Temperature and contamination affect the configuration. Cold storage may need low-temperature lubricants, heated or protected components and a condensation strategy; food or clean applications may require material and hygiene controls; dusty environments may need protected connectors and more frequent inspection. Extreme conditions can sit outside the base assumptions of a general standard and must be declared during selection.

Operator workflow determines whether a stand-on or seated layout is more suitable. Frequent entry and exit can favor a stand-on compartment, while long travel and extended time on the truck can favor a seated or sit-stand layout. Ergonomic decisions should be tested with representative operators rather than inferred from a brochure.

A Buyer Data Sheet Makes Supplier Quotes Comparable

Field	Example entry	Acceptance evidence
Load matrix	1,800 kg at 7,000 mm and 600 mm center	Signed capacity chart
Pallet	1,000 by 1,200 mm entry on 1,000 mm side	Fork and baseleg drawing
Aisle	2,950 mm clear at narrowest protector	Ast plus agreed clearance
Overhead	2,250 mm doorway and 8,200 mm sprinkler	Lowered and extended dimensions
Cycle	28 pallets per hour over two shifts	Battery and charger calculation
Environment	Minus 25 C cold store with condensation transition	Cold-store option list and derating
Test	Ten repeated top-level placements	Witnessed pass or fail record

Comparable quotations require every supplier to answer the same data sheet. Otherwise one vendor may quote a basic 3,000 mm mast while another includes a high-lift triplex, and price differences will reflect scope rather than value. The request should state the required documentation, warranty assumptions, training, spare parts and commissioning responsibilities.

Validation Should Continue After the Purchase Order

Factory and site acceptance should verify dimensions, data plate, battery, charger, functions and safety devices against the approved specification. A practical test should use the real pallet at the narrowest aisle and highest assigned rack level, with the load centered and the floor in normal operating condition.

Daily inspection requirements should be embedded in handover. NIOSH explains that powered industrial trucks should be inspected before service each day, or after each shift when used around the clock, in its daily PIT inspection guidance. The buyer should convert the delivered options into a model-specific checklist and train operators to report defects before use.

The supplier should receive a complete application brief before recommending a model. Buyers can use the SINOLIFT contact page to submit the seven inputs and request confirmation of residual capacity, Ast, mast clearance, battery plan and options for the exact application.

Authoritative References

• ISO FDIS 3691-1 Industrial Trucks Safety Requirements and Verification
• OSHA Critical Forklift Measurements
• NIOSH Conducting a Daily Inspection of Powered Industrial Trucks
• Toyota How to Read a Forklift Data Plate

Frequently Asked Questions

What information should I send when asking for a reach truck quote

Send maximum load weight, load dimensions and center, required fork height, clear aisle width, pallet entry direction, rack geometry, floor condition, operating hours, temperature and attachment requirements.

What is the most important reach truck specification

Residual capacity at the required lift height and load center is the primary safety limit. Aisle fit and overhead clearance are equally important because a truck that cannot maneuver or clear the building cannot perform the task.

Is turning radius the same as minimum aisle width

No. Turning radius describes truck-body geometry. Right-angle stacking aisle width includes the pallet and the truck’s stacking path under a defined test condition.

How much extra aisle clearance should I allow

Use the manufacturer Ast value as the technical baseline and add a site-specific allowance for pallet overhang, rack protectors, floor condition and operator control. The supplier should approve the final layout.

How do attachments affect capacity

Attachments add weight and move the load center forward. Both effects can reduce residual capacity, so the data plate and load chart must reflect the delivered attachment.

Should I choose lead acid or lithium power

Choose from the duty cycle and charging plan. Lead-acid can suit planned battery changes and established battery rooms, while lithium can suit opportunity charging when the battery, charger and management system are properly integrated.

Do I need a site demonstration before buying

A site demonstration is strongly recommended for tight aisles, high lifts, unusual pallets or demanding cycles. Test the real load at the highest location and document acceptance criteria.